Ceramic disc furnace



FIG. 1 is a front perspective view for the ceramic disc furnace furnace, showing the new design;

FIG. 2 is a left side perspective view thereof;

FIG. 3 is a top perspective view thereof; and,

FIG. 4 is a perspective view of the back side thereof.

The surface(s) or portions(s) of the article not shown in the drawing or described in the specification form(s) no part of the claimed design. 

The ornamental design for a ceramic disc furnace, as shown and described. 